Leviticus 22:9-11

⁹“‘They shall therefore follow my commandment, lest they bear sin for it and die in it, if they profane it. I am Yahweh who sanctifies them.

¹⁰“‘No stranger shall eat of the holy thing: a foreigner living with the priests, or a hired servant, shall not eat of the holy thing.

¹¹But if a priest buys a slave, purchased by his money, he shall eat of it; and those who are born in his house shall eat of his bread.